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Finding the Fourth Proportional to 89,599.80, 123,649.84 and 49,315.80

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Solution

The fourth proportional to 89,599.80, 123,649.84 and 49,315.80 is: 68,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,599.80 : 123,649.84 = 49,315.80 : x
  2. Step 2: Convert to fraction form
    89,599.80/123,649.84 = 49,315.80/x
  3. Step 3: Cross multiply
    89,599.80x = 123,649.84 × 49,315.80
  4. Step 4: Simplify right side
    89,599.80x = 6,097,890,779.47
  5. Step 5: Solve for x
    x = 6,097,890,779.47/89,599.80
  6. Step 6: Final answer
    x = 68,056.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.